Author(s): Vicente, E.D. ; Vicente, A.M. ; Evtyugina, M. ; Carvalho, R. ; Tarelho, L.A.C. ; Paniagua, S. ; Nunes, T. ; Otero, M. ; Calvo, L.F. ; Alves, C.
Date: 2019
Persistent ID: http://hdl.handle.net/10773/37122
Origin: RIA - Repositório Institucional da Universidade de Aveiro
Subject(s): Acacia; Gaseous emissions; PM10; OC/EC; Organic markers; Pellet stove
Currently, different types of raw materials are under investigation to fulfil the demand for pellet-based renewable energy. The aim of this study was to experimentally quantify and characterise the gaseous and particulate matter (PM10) emissions from the combustion of a pelletised invasive species growing in the Portuguese coastal areas. The combustion of acacia pellets in a stove used for domestic heating led to a noticeable production of environmentally relevant contaminants, such as carbon monoxide (CO, 2468 ± 485 mg MJ−1), sulphur dioxide (SO2, 222 ± 115 mg MJ−1) and nitrogen oxides (NOx, 478 ± 87 mg MJ−1). Besides gaseous pollutant emissions, substantial particle emissions (118 ± 14 mg MJ−1) were also generated. Particles consisted mostly of inorganic matter, mainly alkaline metals, sulphur and chlorine. About 25%wt. of the PM10 emitted had carbonaceous nature. The chromatographically resolved organic compounds were dominated by anhydrosugars, especially levoglucosan (284 μg g−1 PM10), and several types of phenolic compounds. Retene (8.77 μg g−1 PM10) was the chief compound among polyaromatic hydrocarbons.
